US2823870A - Ice shaving machine - Google Patents

Description

Feb. 18, 1958 D. DAVISON ICE SHAVING MACHINE 5 Sheets-Sheet 2 Filed Sept. 3. 1953 IN VEN TOR.

DAVID DAVIS O N Feb. 18, 1958 D. DAVISON 2,323,870

ICE SHAVING MACHINE Filed Sept. 5. 1953 3 Sheets-Sheet 3 INVEN TOR.

Fl 6 I 2 V DA VlD DAVISON 2,823,870 rcE SHAVING MACHINE David Davi'sonjBaltimore, Md. Application September s, 1953, Sean No. 378,282 1 Claims. (Cl. 241-92 This invention relates to machines for making iceproducts andmore particularlyto those adapted for the shaving of blocks or pieces of ice to make snow orchippings of ice and generally intendedfor domestic or commercial use. j i p I It is an object of this invention to provide a new and improved ice shaving machine that will avoid one or more of the disadvantages and limitations of. the previous art.

Another object of the invention is toprovide a new and improved ice shaving machine that will perform its Work eifectivelypeconomically and expeditiously.

A further object. of this inventio n is to have 'a new and improved ice shaving machine designed with its components arranged to avoidinjurious mechanical effects from the ice,.i ts, shavings or melted ice to the power mechanism operating it. a I V v i g An additional object of the invention is to provide a new and improved ice shaving machine having unique features of convenience and operation without requiring an appreciable enlargement of its form or structure. g H

Other objects of the invention will become apparent as its details are further enlarged upon. i

lthas been customary to design ice shaving machines withthe motor positioned under the ice shaving compartment. j I 7' d p This has been found tobe objectionable since in some instances leakages of water occur andcause trouble in the motor, while in other cases, the repair of the motor has been difficnlt due to the limited amount of room available to, get atits vital parts. Also the rotors employed for carrying the shaving knives have had a solid construction in part where the ice chips would accumulate and become unduly watery, and thereby incidently reduce its effectiveness. In this invention these disadvantages have been corrected by placing the drivingmotor to the side of the ice shaving compartment, and designing the unit so that a greater distribution of its weight can be provided for and a balance created of more stability. The circular rotor for holding the ice shaving knives is made as hollow as feasible with the space between its narrow partitions left open from its circumferential border to discharge the shaved orchipped ice therefrom. This makes the space between the partitions of segmental form. Other features in the structure are provided to make it more practical and easier for maintenance.

For a better understanding of the invention, its objects, principles and mode of operation, reference is made to the accompanying drawings wherein a particular form of the invention is illustrated and its details explained in the following description.

Referring to the drawings: M

Figure 1 is a front elevation of an ice shaving unit embodying this invention;

Figure 2 is a side elevation of the unit indicated in Figure 1;

Figure 3 is a plan view of the unit with its ice compartment and the outer covering over the motor removed;

nited States Patent f 2,823,870 Phtented Feb. 18, 1958 2 j Figure 4 is a partial sectional elevation taken on line 4 4 of Figure 3; d

Figure Sis a side elevation of the rotor used for hold ing the knives for shaving the ice;

Figure 6 is a plan viewof the upper surface of the rotor shown in Figure 5;

Figure 7 is an underview of the same rotor; Figure 8 is a plan view of the ice holder with its cover e o Figure 9 is a sectional elevation on line 9-9 of Figure 8;

V Figure 10 is a sectional elevation on line 10-40 of Figure 1 showing the construction of the cap;

Figure 11 is a detail in perspective of the ice stopper used in the ice holder;

Figure 12 is a detail inperspective of the outer motor covering for the motor used in this embodiment; and

Figure 13is a detail in elevation of the switch control mechanism used in this embodiment.

The reference numerals employed in designating the parts point to thesame parts in all the drawings.

fIn'the construction shown, an 'ice shaving unit consists mainly of base 10 of suitable design having a peripheral lip ll, extending aroundit to serve as a type of tray. On the base a tapering casing 12 is vertically mounted adjacentits front end, leavinghowever, an area 13 on which to"support' a cup or other vessel 14 for collecting the chips of the shaven ice. The casing 12 includes an internal partition 15 in which a 'journal 16 is provided for holding the" driving shaft17 of the ice shavingmechanism. The shaft 17 extends vertically up through the casing and thence through anotherpartition 42 in the double concentricbell component 18. A journal 19 guides and serves asa support for the shaft, in conjunction witha collar 26) secured to'the latter. The shaft 17 is provided with a key way andcollar for'driving a knife holding rotor 21 attached to it.

The'component 18'has an outer wa1l22 to enclose its major belland aninner wal123 to enclose its central bell, an annular -gulley or trough24 being formed between them. This gulley'has the ice compartment 25 disposed over it. The Wa1l 23 of the central bell guides the chips of the shaven ice fromthe rotor 21 to a tunnel 26 leading tangentially from the central bell to a spout 27 emptying directlydown to-the'area 13 andthe vessel, 14 placed on it. Alhole 28 allows excess Water in the component to drain out of it to the base 10 then into :a receptacle (not shown). *Apulley 29 rnounted on the lower portion of the shaft 'carriesa belt 30 to drive it from the pulley 31 on the drive shaft 32 of a motor 33.

The pulleys and belt operate in a horizontal plane.

The ice holder25 is of cylindricalform inside and out. Its chamber 45 is made smooth to allow the ice placed -init tomove as freely as possible downwardly into contact with the knives 46 of the rotor. The knives are suitably held at an anglein the recesses 4-7 having openings 61 to guide theicechipsthroughthe rotor.

The motor 33 is arranged with its axis vertical, andis supportedon legs 34 restingand suitably secured tothe base 10. The motor shown is of the standard electrical typeQWith usual controls and wiring for general operation. The latter are notshown in detail since they are conventionaland Well known to those skilledin the art.

However a trip switch 35 preferably of the mercury contact typeis" providedforoperating the controls, and has to be held up manually to keep the motor running.

When the handor glassor vessel 14is removed the switch "in-eves under gra'vity through a shortarc and disconnects When the unit is completely assembled, it has in addition to the stationary items already mentioned, a motor cover 33 of arbitrary design suited to the form of the casing and motor, so it will fit closely enough to make the unit appear homogeneous and artistic. Its edges 39 are cut on lines that enable it to do this. The cover is made of thin material strong enough for the wear and tear expected of it. It is secured in place by suitable lugs (not shown) through which screws are used to hold it to the casing 12.- Bolts are employed in suitable locations for fastening the ice holder components together. Likewise the bolts 4 are employed for securing the ice stopper 43 to the wall of the ice holder, and acts as a barrier to prevent the ice blocks from being rotated around inside the ice holder 25 by the agitator 54 and provides a better and faster cutting operation. The lugs 40 in the gulley 24 are provided with holes at to receive the ends of the bolts 41 in the ice holder 25. The ice holder 25 is made with. its wall hollow and lined with asbestos or other suitable insulating material 48. A cap 58 of approximate hemispherical form has its rim 49 ledged to fit and stay on the top surface of the holder 25. A partititon 51 extended transversely across the middle portion of the cap serves to hold packed insulation 48 between it and the wall of the cap. The cap is arranged with an ar'cuate crown handle 52 to strengthen it and provide for lifting it. Weep holes 53 at the bottom of the gulley 25 and through the wall 23 enable water to drain out of the outer bell into the central bell and from there through the large drain hole 28 to the base It). The gulleys are rounded to assist in this function. An agitator 54 eccentrically located on the upper face of the rotor 21 revolves with the rotor and stirs up the pieces of ice pressing against the rotor. The agitator is integrally incorporated with the rotor and has a curved 'v'vedge like contour in the vertical plane. To avoid an unbalanced condition due to the Weight of this agitator, a counterweight 55 is positioned on the underside of the rotor at a suitable location opposite the agitator. This eliminates shivering and undesirable vibration in the rotor during its rotative operation and provides a smooth cutting operation and constant stream of shaved ice to the vessel 14. The rotor 21 is primarily constructed in the form of two discs serving as the upper and lower Walls 56 and 57 respectively. These walls are kept separated by radial partitions These partitions are of U-shaped pockets 63 and are open peripherally. This prevents the chipped ice from becoming clogged and deliver-s it in a more rapid manner. The peripheral openings face the wall 23 and centrifugally spill the chipped contents through the tunnel 26 as the rotor brings them into registry with it. From the tunnel 26 the chips pass through the spout 27. The structure indicated is designed for easy assembly and dismantling. The cap St? is readily removed. The ice holder 25 is removed easily from the double bell component 18. The latter can be lifted oif the casing 12 and the casing removed from the base. The bolts and screws used to hold these parts tightly and rigidly together are easily detached with common tools, and are not indicated where their use is provided for in conventional practice.

While but one form of the invention is illustrated in this appliciation, it is not desired to limit the construction to such particular structure, as it is appreciated that other designs could be made and units constructed therefrom, using the same principles and coming within the scope of the appended claims.

Having thus described the invention, what is claimed is:

1. A device for use in producing finely divided ice; said device including a hollow casing having its top and bottom edges arranged in parallel planes, a bell component carried by said casing, an ice shaving structure, means for driving said structure including a shaft, and means mounted on said shaft for rotation about a vertical axis; said component having a Wall formed to provide a lower rim and a discharge spout, a partition cooperating with said rim to form a recess snugly receiving the upper extremity of said casing, a cylindrical wall cooperating with the first mentioned wall to form a trough for receiving the lower portion of a receptacle for holding ice to be shaved, and with said partition to form a compartment, surrounded by said trough and having a liquid tight bottom wall; said ice shaving structure comprising a body with disc-like top and bottom walls having their edges in close proximity to the inner surface of said cylindrical wall, spacing means maintaining said top and bottom Walls in fixed relation with each other, top formations within the interior of the shaving structure body arranged to dsicharge toward said cylindrical wall and communicating one each with one of the openings in said cylindrical wall, a knife mounted at the edge of each of said openings and arranged to direct shaved ice through the opening associated therewith; said shaft mounting means including a pair of aligned journal elements, one in the interior of said casing and one extending through the partition of said bell component, said shaft extending through said elements and being secured to the body of said ice shaving structure; and said component having a passage therein placing the interior of said compartment in communication with saidspout.

2. A device of the type set forth in claim 1, in which said component includes a drainage opening communicating with the interior of said compartment and arranged to conduct ice meltage therefrom and discharge it clear of said casing.

3 A device of the type set forth in claim 2, in which said cylindrical wall is provided with openings located near said partition and arranged to place said trough in communication with said compartment.

4. A device of the type set forth in claim 3, in which the journal element extending through said partition has its upper edge located to be above the level of any water accumulating in said compartment as a result of the melting of ice during the operation of the device.

5. A device of the type set forth in claim 1, in which the top wall of the ice shaving structure body has projecting therefrom an agitator positioned to engage pieces of ice massed above and in close proximity to said top wall.

6. A device of the type set forth in claim 5, in which said body is provided with means to overcome any unbalanced condition of the body due to the presence of the agitator on said top wall.

7. A device of the type set forth in claim 1, in which the spacing means of the ice shaving structure comprises a set of partitions radiating from the center of said body, and a plurality of pocket formations including an outer portion of one of said partitions and an extension projecting from such portion and terminating at the side of the body of said ice shaving structure.

References Cited in the file of this patent UNITED STATES PATENTS Re. 20,952 Smith Dec. 20, 1938 1,782,296 Goldstein Nov. 18, 1930 2,646,223 Quintilian July 21, 1953 2,665,852 Shively Jan. 12, 1954 2,714,490 Prechter Aug. 2, 1955

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